I've been thinking about Castlevania 3 lately and what made the game so brilliant, other than amazing music and near-perfect level design; level nine can still bite me. Okay it already has. Repeatedly. While the games taking place solely in or around Dracula's castle still give off an awesome feel of infiltration and storming the castle, Castlevania 3 does feel like it has the grandest scale of, well, any Castlevania. The intro lays out the story of a war, and that they need a Belmont to get to Dracula and kill him. So as you progress, you see the map, tracking your progress around the part of the country where Dracula's castle resides. The multiple paths add a strategic layer to it as well; what would be the best route to take to get into the castle? What's the least-treacherous? And even the clock tower level, which looks like an easy way to the castle, becomes an obstacle as it collapses, forcing you to go back down and find a new path.
It's brilliant. So very brilliant. And finding the helpers is just the icing on the cake, other characters that have a beef with Dracula and want to help you take him down. I should give it another play or two. ... still on the Famicom version. 
On an aside, I've begun Order of Ecclesia at last. Made it to the mountain level. Pretty good so far, kind of like a Simon's Quest that doesn't suck, though that's also kind of a misleading description. That crab boss can die though.